Johahn kboog



(No Model.)

J. KROOG.

APPLIANGE FOR LOCKING FILTER PRESSES.

Patented Mar. 13,. 188s;

.NSN

N. PETERS. Fhokufncgmpher. wuhingmm. a

Nrrnn STATES ATENT eineno JOHANN KROOG, OF HALLE-ON-THE-SAALE, PRUSSIA, GERMANY.

SPECIFICATION forming part of Letters Patent No.379,518, dated March 13, 1888.

Application filed March 16, ISST. Serial No. 231,150. (No model.) Patented in Germany September 26, 1879, No. 9,641, and I in Austria-Hungary, July 15, 1880, No. 40,051 and No. 1,950.

To @ZZ whom, t may concern:

Be it known that I, JOHANN Knooe, of the city of Halle-on-the-Saale, in the Kingdom of Prussia and German Empire, have invented a certain new and useful Improvement in Appliances for Locking Filter-Presses, (for which I have obtained patents in Germany dated September 26, 1879, No.A 9,641, and in Austria-Hungary, dated July l5, 1880, No. 40,651 and No. l,950,) of which the following is a specification, reference being had to the accompanying drawings, and to the-letters of reference marked thereon.

This invention relates to improvements in appliances for locking liltering-presses, its object being to construct the said appliances in such a manner that the filtering-press may be easily and securely locked and readily unlocked when required.

In the accompanying drawings, forming part of this specification, Figure l is a side elevation ofa filtering-press with my improvement partly in section. Fig. 2 is a plan thereof, also partly in section. Fig. 3 is an end elevation of the standard, showing my said improvement partly in section.

The improved locking device is formed by the non-rotating nut t being held in position by the bolts b and c in the standard d, and the threaded spindle e arranged within the said nut a. One end ofthe said spindle e enters a recess of the head-piece f, and the other end is formed into a square part, g, to fit a handwheel or key for turn-ing the spindle, and thereby locking or unlocking the filtering press. y

In order to unlock or release the filteringpress it is simply necessary to turn the spindle e back sufficiently to disengage its end from the recess in the head-piece f. Thereupon the bolt b is pulled out, and the nut a, being fulcrumed on the bolt c, is swung around, thus giving sufficient room to allow of shoving back the movable head-piecef.

The standard d is provided at its upper end with a yoke or frame composed of top and bottom horizontal plates, d cl2, joined at their ends by eyes d3, through which pass the tierods h, that support the lteringpress.

The nut a is held stationary by the bolts b ande in the space between the upper and lower plates comprising the yoke or frame, and to effect this the nut is formed integral with rigid arms u a, projecting horizontally in opposite directions from the sides of the nut. The outer extremities of these rigid arms are provided with the vertical perforated hubs a2 for the passage of the bolts b c. The upper and lowerends of these hubs bear, respectively,against the upper and lower plates, d d2, so that the nut when released can swing in a true horizontal` plane and be supported in such plane by one of the hubs.

It will be seen that this improved locking device is of simple construction and admits of most readilyand quickly locking and unlock; ing filtering-presses.

Iam aware that in a baling-press a yoke carrying a swiveled rotating nut has been provided with bolts, so that by removing one bolt the yoke could be swung away from the line ot' thepress-box, as in Letters Patent No. 194,888. Such, therefore, Idisclaim.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

In a ltering-press, the combination of the standard d, provided at ils top with the upper and lower iixcd plates, d' d2, joined at their ends, theV horizontal non-rotating nut a, having the horizontal rigid arms c', provided with perforated hubs a?, arranged between and bearing against the upperand lower plates on the standard, the rotating screw e, arranged in the nut,and the bolts b and c, passing through the rigid arms of the nut and the said upper and lower plates, substantially as described.

In testimony whereol'I have signed my name to this specication in the presence of two subscribing witnesses.

JOHANN KROOG.

Witnesses:

A. D HEURnUsE, EMIL WOLF. 

